# Path sampling for lifetimes of metastable magnetic skyrmions and direct comparison with Kramers' method

@article{Desplat2020PathSF, title={Path sampling for lifetimes of metastable magnetic skyrmions and direct comparison with Kramers' method}, author={Louise Desplat and Christoph Vogler and J-V Kim and Robert Stamps and Dieter Suess}, journal={Physical Review B}, year={2020} }

We perform a direct comparison between transition state theory and forward flux sampling as a means to compute collapse rates of metastable magnetic skyrmions. We show that a good agreement is obtained between the two methods. We report variations of the attempt frequency by several orders of magnitude when the applied magnetic field varies weakly, which confirms the existence of a strong entropic contribution to the lifetime of skyrmions. This demonstrates that the knowledge of the rate…

## 13 Citations

### Instability of skyrmions in magnetic fields

- Physics
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In this combined experimental and theoretical work, we report on the evolution of the skyrmion radius and its destruction in the system Co/Ru(0001) when an out-of-plane magnetic field is applied. At…

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It is shown that for materials described by the same micromagnetic parameters, the variation of the atomistic exchange between different neighbors, the stacking order, and the number of layers of the atomic lattice can significantly influence the rate of the thermally activated decay of a skyrmion.

### Skyrmion States in Disk Geometry

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The lifetime of antiskyrmions at room temperature in a Mn-Pt-Sn tetragonal Heusler material has been calculated using an atomic scale representation including nearly a million spins. The evaluation…

### Stability of long-lived antiskyrmions in the Mn-Pt-Sn tetragonal Heusler material

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The lifetime of antiskyrmions at room temperature in an Mn--Pt--Sn tetragonal Heusler material has been calculated using an atomic scale representation including nearly a million spins. The…

### Machine learning method for computation of optimal transitions in magnetic nanosystems

- Computer ScienceNanosystems: Physics, Chemistry, Mathematics
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A machine learning based approach to search for MEP computation methods by reformulating the NEB method as a differentiable transformation in the space of all paths parametrized by a family of metaparameters using rate of convergence as the loss function.

### Skyrmionic interconnect device

- Physics
- 2020

This paper proposes a magnetic skyrmion-based interconnect device that encoded sequences of information by skyrmionic quasiparticles with distinct topology in a single device.

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